它是什么？

Fabric or shades to dim lighting in the classroom.

它在哪里找到？

Covering fluorescent or other lights in the room.

我该如何使用它？

Certain types of lighting, especially fluorescent, can cause light sensitivity. Sometimes the sound in the bulbs is distracting, so natural light might be best if it’s an option! Teaching Artists might not have the option to add fabric shades to a room, but if you see them (or notice that the lights are always off, etc.), you might guess that someone in the room has light sensitivity.